Overwintering guide
How to overwinter mountain soursop
Winter watering
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
The mistake that kills mountain soursop in winter
Bringing mountain soursop into a warm living room. Too much winter warmth forces weak, pale growth that collapses when it goes back outside — cool and bright beats warm and dim.
More mountain soursop care
Overwintering mountain soursop — FAQ
Does mountain soursop need to come indoors for winter?
Mountain Soursop is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze. Mountain Soursop will take cool conditions but not a hard freeze, so the aim is a frost-free winter rather than a warm one. An unheated greenhouse, porch, conservatory or bright garage all work well. Keep it cool, bright and on the dry side, and it will hold steady until growth restarts in spring.
When should I move mountain soursop for winter?
Move under cover before the first hard frost; back outside after the last spring frost.
How often should I water mountain soursop in winter?
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
What kills mountain soursop over winter?
Bringing mountain soursop into a warm living room. Too much winter warmth forces weak, pale growth that collapses when it goes back outside — cool and bright beats warm and dim.